Collections

Visual images from the 1930s-1940s depict the Consolidation Coal Company (the forerunner of CONSOL Energy Inc.) and its operations, including miners at work, mine construction, interiors of shafts, mine cars, barges carrying coal, and railroad cars filled with coal. Also includes hand-drawn above-ground maps and annual reports.

A philosopher of science who played a central role in the development of logical positivism, Hempel is primarily associated with the concept of deductive-nomological explanation and with the Raven paradox.

Contains speeches given by Charles C. McGovern between 1924-1948. They include Square Deal Party speeches made during the McGovern/Barr for County Commissioners re-election campaign and WJAS weekly broadcast speeches.

This collection contains video interviews with people who experienced China’s Great Proletarian Cultural Revolution (1966-1976). The CR/10 (Cultural Revolution: 10) Project also includes interviews with young Chinese people born after the Cultural Revolution, who discuss how they learned of this historical incident. The Cultural Revolution lasted 10 years, and each interview lasts approximately 10 minutes, hence the name of the project, CR/10. Most interviews were conducted and recorded in person, while some were recorded via Skype. Most of the interviews were collected in the United States, while others were recorded in China, Canada, or elsewhere. Collection of interviews began in 2015 and continues to the present.

Contains Chinese student newsletters from 1970 to 1998. The majority were published by overseas Chinese students in the United States, with a few published in Canada, Hong Kong, and several other countries. Most of the newsletters are written in Chinese.

The City Directories contains directories published between 1815 and 1945 by J.F. Diffenbacher and R.L. Polk & Company. While most of the directories cover Pittsburgh and Allegheny City, a portion includes Homestead and nearby boroughs.

Records partially document a conference in April of 1756 in Philadelphia between the Six Nations of the Iroquois and the Quakers in an attempt to create peace for innocent inhabitants during the French and Indian War.